EP2207978B1 - Reibungskupplung - Google Patents

Reibungskupplung Download PDF

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Publication number
EP2207978B1
EP2207978B1 EP08801246.3A EP08801246A EP2207978B1 EP 2207978 B1 EP2207978 B1 EP 2207978B1 EP 08801246 A EP08801246 A EP 08801246A EP 2207978 B1 EP2207978 B1 EP 2207978B1
Authority
EP
European Patent Office
Prior art keywords
spring
plate
housing
friction clutch
axially
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08801246.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2207978A1 (de
Inventor
Yannick Simon
Christoph Raber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40091315&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2207978(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2207978A1 publication Critical patent/EP2207978A1/de
Application granted granted Critical
Publication of EP2207978B1 publication Critical patent/EP2207978B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/75—Features relating to adjustment, e.g. slack adjusters
    • F16D13/757—Features relating to adjustment, e.g. slack adjusters the adjusting device being located on or inside the clutch cover, e.g. acting on the diaphragm or on the pressure plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/583—Diaphragm-springs, e.g. Belleville
    • F16D13/585—Arrangements or details relating to the mounting or support of the diaphragm on the clutch on the clutch cover or the pressure plate

Definitions

  • the present invention corresponds to a friction clutch according to the preamble of claim 1.
  • the invention relates generally to friction clutches, in particular those in which a wear compensating at least the friction linings of the clutch adjusting device is present, in particular those, as described for example in the patent applications DE 42 39 291 A1 . DE 43 06 505 A1 . DE 42 39 289 A1 . DE 43 22 677 A1 . DE 44 18 026 A1 . DE 44 31 641 A1 and DE 195 10 905 A1 described or mentioned.
  • Such friction clutches are intended inter alia for use in the drive train of a motor vehicle, and have in the vast majority of cases with respect to a housing non-rotatable, but axially limited displaceable pressure plate, between housing and pressure plate at least one plate spring is provided which the pressure plate in the axial direction of Housing applied away.
  • the provided in the friction clutch adjusting ensures an at least approximately constant state of tension of the plate spring and thus also an approximately same contact pressure over the life of the mounted in the drive train friction clutch.
  • the present invention has for its object to provide friction clutches of the type mentioned, their production itself and the production of their components can be done easily and inexpensively, these components should be as simple as possible dimensioned to ensure optimum function of the friction clutch.
  • Another object is to provide friction clutches on the Ausgurweg the diaphragm spring tongues and taking into account the possible manufacturing tolerances or scattering, as well as over the life or on the wear of the friction clutch as low and / or as constant as possible Ausgurkraftverlauf at least after release of the clutch disc - exhibit. It should also be avoided over the maximum possible Ausschweg and over the life of the clutch an unacceptable or undesirable increase in force, which could affect the function of the adjusting device.
  • the pressure plate and the plate spring can experience an axial displacement relative to the housing, at least due to Reibbelagverschl foundedes, thereby changing the state of tension of the leaf spring-like means of the sensor spring and the additional spring means.
  • the adjusting device also causes the Abstützauflage the disc spring is axially displaced depending on the friction lining wear occurring.
  • the introduction of the sensor spring on the plate spring axially exerted supporting force, at least approximately at the radial height of the support between the plate spring and pressure plate done.
  • this point of introduction takes place on a different diameter range of the diaphragm spring, z. B. at least approximately at the radial height of the Abstweilauflage, or radially outside or radially within this Abstweilauflage.
  • the introduction of the force exerted by the additional spring means on the disc spring axial force takes place radially within the Abstweilauflage.
  • the introduction of force of the additional spring means can also be done on a different diameter range of the diaphragm spring and in a similar manner as has been explained in connection with the sensor spring. It may, however, be particularly advantageous if the introduction of the supporting forces exerted axially by the sensor spring and the additional spring means on the disc spring takes place on different radial sides with respect to the annular abutment support.
  • the force can be introduced by the sensor spring radially outside the Abstützauflage and take place the force by the additional spring means radially within this Abstützauflage.
  • the additional spring means may advantageously be formed by a preferably made of steel component, which has an annular portion extending from the radially extending, spring properties having arms which act on the plate spring axially.
  • the arms are directed radially outward with respect to the annular region.
  • the annular region can be supported axially or indirectly directly on the coupling housing. The support of the annular region can be done in a simple manner by means of additional arms, which also emanate from the annular region and serve to support the additional spring means on the housing. If necessary, the additional arms can also have a certain suspension or spring property.
  • the annular region, the resilient arms and the additional arms may be integrally formed.
  • the support of the additional spring means relative to the housing can be carried out in a simple manner via a bayonet lock, wherein the additional arms may have corresponding trained areas for forming this bayonet lock.
  • the bayonet lock or bayonet connection can be made.
  • the additional arms can be axially supported by means provided on the housing support areas.
  • the additional arms of the additional spring means may be axially aligned and attached to correspondingly adapted areas of the coupling housing.
  • the additional arms of the additional spring means may be formed or aligned in a similar manner as resilient arms.
  • such additional arms can also extend radially outwards from an annular, closed region and are axially supported on prestressed support areas supported by the housing.
  • the resilient arms and the additional arms viewed in the circumferential direction are provided alternately or alternately, wherein viewed in the circumferential direction, between two additional arms and at least two resilient arms can be provided.
  • the additional spring means and the additional arms and possibly the associated with these arms closed ring area may have a certain spring property.
  • To support the additional arms may be used on the housing fixed bolts, which extend axially through openings of the plate spring through. Such bolts have own support areas z. B. in the form of a bolt head for the additional arms.
  • the axial support means for the additional arms can simultaneously serve as a support means for the plate-spring-like sensor spring.
  • the inventive arrangement of spring means in a friction clutch with adjusting device which is effective between the housing and disc spring, the road safety when disengaging the friction clutch can be increased, namely because of the Nachstellddling or adjustment, in which an existing pad wear is compensated by the adjusting device, the cup spring against the housing side pivot support acting sum force is greater.
  • This sum force is generated in the friction clutches according to the type described in the vast majority of cases by the existing between the friction linings, existing between the housing and pressure plate leaf spring-like means and at least one plate spring axially supporting energy storage, which may be formed like a membrane.
  • the plate spring axially supporting spring elements which have at least over the after release of the clutch disc by the pressure rest Restausschreibweg a progressive force curve ensures that at least over this Restausschreibweg the plate spring axially supporting, so acting against the cover side Abstützauflage
  • the total force increases, as a result of which the disengagement force acting on the plate spring tongue tips can also be correspondingly greater, in particular in the end region of the disengagement path, without an undesired readjustment, that is to say an adjustment which is not attributable to wear.
  • the additional leaf spring-like means may be installed between the housing and the pressure plate so that they have over the Ausgurweg the friction clutch, which means so also on the displacement of the pressure plate in the disengagement, a degressive, ie decreasing force curve.
  • the spring characteristics of the leaf spring-like means and of the auxiliary spring means acting parallel to these can be coordinated with one another in such a way that the resultant force profile generated by these forces, which acts on the plate spring, remains practically constant over the possible release path of the pressure plate relative to the housing.
  • Such tuning is advantageous when using a sensor spring, which applies the majority of the force required for the pivotal mounting of the diaphragm spring on the housing.
  • the plate spring may advantageously have a characteristic curve, which ensures that during the displacement of the spring-loaded Abstweiletzwitzlage decreases the force required to pivot the plate spring.
  • the plate spring may have a sloping force-displacement characteristic over at least part of the Ausschreibweg Schemees, in particular in the section within which the adjustment takes place.
  • the pressure plate 3 is rotatably connected to the housing 2 via circumferentially or tangentially directed leaf springs 9.
  • the cooperating with the clutch 1 clutch plate preferably has so-called pad spring segments, which ensure a progressive torque build-up when engaging the friction clutch by allowing a limited axial displacement of the two friction linings of the clutch disc towards each other to a progressive increase in the axial forces acting on the friction linings.
  • the plate spring 4 has a contact force applying annular base body 4 a, from the radially inwardly extending actuating tongues 4 b go out.
  • the diaphragm spring 4 is installed in such a way that it acts on the pressure plate 3 with regions 6 lying radially further outward, and can be tilted around the support support 5 with regions 7 located radially further inwards.
  • the further spring means 10 is formed here like a spider and clamped between the housing 2 and the plate spring 4 such that it exerts an axial force on the plate spring 4, which urges the plate spring 4 in the direction of the housing 2 and thus against the Abstützauflage 5.
  • the additional spring means 10 is axially supported on the housing 2 and acted upon with tongue-shaped areas 12, the plate spring. 4
  • the spider-like further spring means 10 has a circumferentially closed, for example, ring-shaped region 13, from which the tongue-shaped portions 12 extend radially outward. Viewed in the circumferential direction 12 support arms 14, 15 are provided between the tongue-shaped areas. In the state of the further spring means 10 mounted in the friction clutch 1, the arms 14, 15 are supported on supporting areas carried by the housing, which in an embodiment of a friction clutch according to FIG FIG. 2 are formed by spacers 16, from. The spacer bolts 16 are riveted to the housing 2 and extend axially through the plate spring 4 therethrough. For this purpose, the plate spring 4 has corresponding cutouts.
  • the spacer bolts 16 have a head-shaped Anformung or widening 17 at which the arms 14, 15 are axially supported. During assembly of the further spring means 10 this is resiliently clamped to apply the required supporting force for the plate spring 4.
  • both the tongue-shaped portions 12 and the arms 14, 15 have resilient properties.
  • the closed area 13, can be used to generate the desired spring characteristic. How out FIG. 3 it can be seen, in the illustrated embodiment, a further spring means 10 radially outwardly directed cutouts 18 are provided radially within the arms 14, 15, whereby the closed region 13 has a meandering course in the circumferential direction.
  • a further three spacer bolts 16 can then be riveted to the housing 2, on which the arms 15 can be supported with prestressing.
  • the rotation between the housing 2 and the other spring means 10 is ensured simultaneously.
  • the end portions of the arms 15 are adapted to the diameter of the spacers 16 accordingly.
  • the friction clutch 1 further has an additional spring means 11, which is referred to below as a plate-spring-like sensor spring 11.
  • the plate-spring-like sensor spring 11 has an annular base body 19, from which tongues 20 extend radially outward.
  • the tongues 20 are supported with axial prestressing on the areas 6 of the plate spring 4 which are located further outward. This axial preload is ensured by the tensioned mounting position of the plate-spring-like sensor spring 11.
  • the tense installation position is achieved by supporting the plate-spring-like sensor spring 11 on the spacer pin 16.
  • the plate-spring-like sensor spring 11 radially inside corresponding arms or arms have, for example, cooperate with the Abstützgropfen 17 of the spacer pin 16.
  • the plate-spring-like sensor spring 11 can be assembled in a similar manner as described in connection with the other spring means 10 by means of a bayonet-like mounting with the housing 2.
  • the in the FIGS. 4 and 5 shown friction clutch 101 has substantially the same structure as the friction clutch 1 according to the Figures 1 and 2 ,
  • the plate spring 104 is also mounted pivotably in a housing 102 relative to a Abstützauflage 105.
  • the axial support of the plate spring 104 is again by means of leaf springs 109, a further spring means 110 and a plate-spring-like sensor spring 111.
  • the main difference of the coupling design according to the FIGS. 4 and 5 compared to an embodiment according to FIGS. 1 and 2 consists in the formation of the further spring means 110 and its support on the housing 102nd
  • the further spring means 110 has an annular base body 113, from which radially outwardly directed tongue-shaped regions or arms 112 emerge. These tongue-shaped portions 112 support the plate spring 104 of the friction clutch 101 in a similar manner as the tongue-shaped portions 12.
  • FIG. 6 is also recognizable that 113 axially directed tongues 114 are formed on the radially outer region of the annular base body.
  • the tongues 114 are arranged in the circumferential direction between tongue-shaped regions 112. In the illustrated embodiment, three such tongues 114 are provided.
  • the tongues 114 serve to support the further spring means 110 on the housing 102.
  • connection between the further spring means 110 and the housing 102 by means of a plug / rotary connection, ie a bayonet-type connection.
  • the tongues 114 form insertion regions 120, which are formed here by the introduction of a circumferential cutout 121 into the tongues 114.
  • the hanging portions 120 cooperate with support portions 122 of the housing 2, as is apparent FIG. 5 is recognizable.
  • the support regions 122 are preferably formed integrally with the housing 102. These support regions 122 can be formed, for example, by webs 122 formed integrally with the housing 102.
  • the individual webs 122 may be interconnected radially inwardly via annular closed area.
  • the annular, closed region may be arranged axially adjacent to the annular base body 113.
  • the support portions 122 may be made and formed in a manner similar to that described in connection with FIG DE 43 45 215 B4 is described.
  • FIG. 7 a contiguous embodiment of a plate-spring-like sensor spring 211 and an additional spring means 210 is shown.
  • FIG. 7 it can be seen that the plate-spring-like sensor spring 211 and the other spring means or the additional spring means 210 are connected via axially flexible connecting portions 212.
  • the connecting portions 212 In order to ensure the softness of the connecting portions 212, they have meandering areas 213 in the radial direction as well as torsion areas 214, by means of which they are connected to the corresponding spring element 210 and / or 211.
  • the further spring means 10 is configured and clamped so that it both the disk spring 4 axially disengaged when disengaging the friction clutch 1 in the direction of the housing 2, so at least over the Abhubweg the pressure plate 3 has a progressive force curve.
  • the latter means that - viewed over the Abhubweg the pressure plate 3 and the pivot angle of the plate spring 4 to the Abstützauflage 5 considered - the axial force exerted by the other spring means 10 on the plate spring 4 at least over a partial area preferably over the entire Abhubweg the pressure plate 3 and ., The pivot angle of the plate spring 4 is larger.
  • the leaf springs 9 are also installed with axial tension between the housing 2 and the pressure plate 3.
  • the tension of the leaf springs 9 is made such that - viewed over the Abhubweg the pressure plate 3 - the force exerted by the leaf springs 9 on the pressure plate 3 and thus on the plate spring 4 axial force in the lifting of the pressure plate 3 is degressive, so is smaller.
  • the tension of the leaf springs 9 increases, so that the axial force exerted by these increases.
  • the axial force generated by the further spring means 10 on the disc spring 4 also increases with increasing Reibbelagverschl supplement the clutch disc, as shown in the diagram FIG. 11 is recognizable.
  • FIG. 10 shows a possible force-displacement curve for a plate-spring-like sensor spring 11. From the diagram according to FIG. 10 It can be seen that with increasing Kupplungsissuenreibbelagverschl supplement the force exerted by plate-spring-like sensor spring 11 on the plate spring 4 axial force is smaller so is degressive.
  • the force-displacement characteristics of the spring elements 9, 10 and 11 are coordinated so that the occurring over the Kupplungsusionnreibbelagverschl admiration of the force exerted by the plate spring-like sensor spring 11 axial force, at least partially, is compensated by the thereby occurring increase of the leaf springs 9 and by the other spring means 10 exerted axial forces, which also act on the plate spring 4.
EP08801246.3A 2007-09-24 2008-08-28 Reibungskupplung Not-in-force EP2207978B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007045584 2007-09-24
PCT/DE2008/001439 WO2009039813A1 (de) 2007-09-24 2008-08-28 Reibungskupplung

Publications (2)

Publication Number Publication Date
EP2207978A1 EP2207978A1 (de) 2010-07-21
EP2207978B1 true EP2207978B1 (de) 2013-05-29

Family

ID=40091315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801246.3A Not-in-force EP2207978B1 (de) 2007-09-24 2008-08-28 Reibungskupplung

Country Status (9)

Country Link
US (1) US8162120B2 (ja)
EP (1) EP2207978B1 (ja)
JP (1) JP5340294B2 (ja)
KR (1) KR101498317B1 (ja)
CN (1) CN101809308B (ja)
BR (1) BRPI0817692A8 (ja)
DE (2) DE112008003201A5 (ja)
WO (1) WO2009039813A1 (ja)
ZA (1) ZA201001421B (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013091598A1 (de) * 2011-12-22 2013-06-27 Schaeffler Technologies AG & Co. KG Reibungskupplung
DE102013201660A1 (de) * 2012-02-22 2013-08-22 Schaeffler Technologies AG & Co. KG Kupplungssystem
DE102012213684A1 (de) * 2012-08-02 2014-02-06 Schaeffler Technologies AG & Co. KG Zugankeranordnung zum Verlagern einer Anpressplatte einer Reibungskupplung
EP2917600B1 (de) * 2012-11-09 2019-12-11 Schaeffler Technologies AG & Co. KG Kupplungsvorrichtung
DE102013206548A1 (de) † 2013-04-12 2014-10-16 Schaeffler Technologies Gmbh & Co. Kg Druckplattenbaugruppe und Kupplungsvorrichtung mit Druckplattenbaugruppe
DE102014216467A1 (de) 2013-09-19 2015-03-19 Schaeffler Technologies Gmbh & Co. Kg Rampenring für eine Nachstelleinrichtung
CN105960551B (zh) * 2013-11-26 2019-02-12 Gkn汽车有限公司 包括带有目标元件的联轴器总成的差速器
DE112014006234A5 (de) * 2014-01-22 2016-10-27 Schaeffler Technologies AG & Co. KG Kupplungssystem mit druckgeregelter Reibungskupplung
DE102015201917A1 (de) * 2014-02-13 2015-08-13 Schaeffler Technologies AG & Co. KG Selbstnachstellende Kupplung mit modifizierter Sensorkraft
DE102014211437A1 (de) * 2014-06-16 2015-12-17 Schaeffler Technologies AG & Co. KG Stützfeder für ein Betätigungssystem einer Reibkupplung
FR3029998B1 (fr) * 2014-12-16 2018-04-20 Valeo Embrayages Mecanisme d'embrayage, notamment pour vehicule automobile
EP3277971B1 (de) * 2015-04-02 2019-10-23 Schaeffler Technologies AG & Co. KG Reibkupplung mit einer rotationsachse zum lösbaren verbinden einer abtriebswelle mit einem verbraucher
US11125279B2 (en) 2017-08-08 2021-09-21 Schaeffler Technologies AG & Co. KG Self-reinforcing friction clutch having leaf springs
CN108061119A (zh) * 2018-01-22 2018-05-22 廊坊双飞碟簧有限公司 一种线性碟形弹簧
DE102018103981A1 (de) * 2018-02-22 2019-08-22 Schaeffler Technologies AG & Co. KG Reibkupplung für einen Antriebsstrang eines Kraftfahrzeugs mit zumindest einer Blattfeder zur Verstärkung einer Anpresskraft einer Federeinrichtung

Citations (1)

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Publication number Priority date Publication date Assignee Title
US5715921A (en) * 1994-12-24 1998-02-10 Fichtel & Sachs Ag Friction clutch with auxiliary spring to assist the release force

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Publication number Priority date Publication date Assignee Title
US5715921A (en) * 1994-12-24 1998-02-10 Fichtel & Sachs Ag Friction clutch with auxiliary spring to assist the release force

Also Published As

Publication number Publication date
EP2207978A1 (de) 2010-07-21
BRPI0817692A2 (pt) 2015-04-07
DE112008003201A5 (de) 2010-09-02
DE102008044820A1 (de) 2009-04-09
ZA201001421B (en) 2011-05-25
KR101498317B1 (ko) 2015-03-03
JP2010540851A (ja) 2010-12-24
CN101809308A (zh) 2010-08-18
KR20100072208A (ko) 2010-06-30
US20100258399A1 (en) 2010-10-14
US8162120B2 (en) 2012-04-24
JP5340294B2 (ja) 2013-11-13
CN101809308B (zh) 2013-04-17
WO2009039813A1 (de) 2009-04-02
BRPI0817692A8 (pt) 2017-12-19

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